During the winter I had lots of issues because dirt/ice was getting stuck in the wheels, causing serious vibration. Three weeks ago, switched to summer tires and wheels were cleaned. Major difference, MUCH smoother. But now I think I may have the same vibration issue discussed here. The winter vibrations just alter my base reference to what vibration is. Unlike this winter, only the steering is vibrating, not the vehicle. At first I thought it was just the steering wheel transferring the road surface as the vibration seems to change depending on the type of surface. What I noticed is the vibration is one cycle of 1-2 seconds. Imagine a sinusoidal waveform representing the intensity of the vibration. In my case seems like the nicer, the road surface the more it will vibrate. On section of the roads with deep rut, I can't feel it.
Do people that have that vibration also notice the cycle or is it a steady vibration.